Click on Apple logo in the top left corner of the menubar.To find out which macOS is currently running on your Mac, follow these steps:
Also, older Macs would benefit if upgraded at least to macOS Sierra for which Apple still releases security patches. However, for users that need to run 32-bit apps on Mac, the best macOS is Mojave. The best Mac OS version is the one that your Mac is eligible to upgrade to. While everything below is just my opinion, as a long-time Mac user and veteran software engineer, I hope my opinion worth something. Since the mission of this blog is to refute myths and legends around Macs, it’s time for me to provide my 2 cents about the issue on hand. In any case such an endeavor is not trivial.Which Mac operating system is the best is a topic of numerous debates among Apple fans. this guide on MacRumors for OS X Yosemite (10.10). If you search the Internet you will find verious reports, e.g. It seems to be possible to get up to El Capitan (10.11) but all of it without accelerated graphics. AFAIK only Mountain Lion (10.8) works with the incomplete 64-Bit drivers from Mac OS X 10.6.2. One of those attempts is MacPostFactor and macOS Extractor by OS X Hackers. There are unofficial attempts to get Mountain Lion (10.8), Mavericks (10.9) and Yosemite (10.10) on those otherwise unsupported Macs. The problem is that without the graphics drivers the OS doesn't work. They had only very basic functions (I think they lack support for both Quartz Extreme and Core Image) and were in a very early develpment state. They were even briefly included in Mac OS X 10.6.2 Snow Leopard.
Since OS X 10.8 Mountain Lion the OS is exclusively 64-Bit.Īpple did try to get 64-Bit drivers for the Intel GMA950 as well as the GMA X3100. There are only 32-bit drivers (in OS X terms: kexts) available. The problem is the integrated graphics processor (GMA), in the case of the MacBook "Core 2 Duo" Early 2008 aka MacBook4,1 the Intel GMA X3100. On the plus side the MacBook4,1 has not only a 64-Bit CPU but also a 64-Bit EFI.
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